Evacuation blanket



FIG. 1 is a top perspective view of the design of an evacuation blanket;

FIG. 2 is a top plan view of the evacuation blanket shown in FIG. 1; and,

FIG. 3 is a bottom plan view of the evacuation blanket shown in FIG. 1.

Any features shown in broken lines depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for an evacuation blanket, as shown and described. 